The actor shines the spotlight on Al Capone, Alcatraz's most famous resident, who basically created the gangster archetype seen on screen - and the streets. Outside of being a mobster, Capone had a complex personal life with his own inner struggles, including feeling intense shame over his facial scars.

The actor examines notorious criminal Billy Hill, who indulged in smuggling, protection rackets and extreme violence. Plus, the extreme violence of twins Ronald Kray and Reginald Kray, who were involved in murder, armed robbery, arson, protection rackets, gambling and assaults.